Feature:
1). Size: Dia. 20mm x 70mm
2). ultra high performance LEDx1,
3). High quality rechargeable batteries inside(over 500 charge cycle)
4). Charge by USB Power,
5). NO software/driver needed,
6). 1.5hours lighting time for one charge cycle(20 min charge)

Function:
1). Prsee the button on the top cover ==> LED lighting
2). Press the button again ==> LED Flash light
3). Press the button 3rd time ==> Turn off the LED
4). Carabiner fixed on the cover of the torch for your convenience